Apparatus for forming hollow glass articles.



A. SCHRAM. V APPARATUS FOR FORMING HOLLOW GLASS A BKIIOIIESr APPLICATION FILED JULY 6, 1911.

Patented Jan. 2, 1912.

f m h. w\ W 1 M WITQIESSE'S ALEXANDER LUMSDEN SCHRAM, 0E HILLSBOR'O, ILLINOIS.

APPARATUS FOR FORMINGHOLL'I W GLASS ARTICLES.

Specification of Letters Patent.

Patented Jan. 2,1912.

Application filed July 6, 1911. Serial No. 637,196.

To all whom it may concern:

Be it known that I', ALEXAN ER L. SOHRAM, a resident of Hillsboro, in, the county of Montgomery and State of Ill nois; have. invented a new and useful Improvement in Apparatus for Forming Hol low Glass Articles, of which the following is 'a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which Figure 1 is a vertical section of the sucking mold which I prefer to employ; Fig. 2 is a similar-view showing the pressing of the neck in the sucking mold; 3 is a .similar view showing the sucking moldswun'g aside and the blow mold in place;'

"- and Fig. 4; is a view similar to Fig. 3, showing the formed article in the blow mold.

My invention relates to the. forming of hollow lass articles by pressing and blowing and is designed to provide apparatus whereby such articles may be rapidly and elficiently produced.

I In carrying out my invention, I employ themold set forth in my copending application,- Serial No. 603.133, filed January 17,

21911. In this method, I first suck the glass into a mold, without first shaping the glass to its final form in any portion thereof. The sucking mold is provided with a mold ring having a shaping recess, which recess, however, is shut oitfrom contact with the glass during the sucking operation.' This may be done by means of the sucking cap itself which covers the recess. .After the glass is sucked into the mold and cut oil", the sucking cap is removed and the upper portion of the glass is pressed into the form of the open neck and mouth'of the a'rticle.

, The sucking mold halves are then removed fin-g mold 2. is seated a two-part mold ring,

consistingof an inner ring 3, having a and the parts of a .blow mold are placed around a blank, whichhangs suspended from the mold ring of the sucking m0ld. The blank is then expanded, preferably .by

the usual blowing mold, to shape it to the form desired in the blow mold.

In the drawings, 2 represents a sucking mold-which is formed in divided separable arts connected. by hinging on in. any other desirable: wa On the body of the suck--v an outerinclosing ring'5, which is recessed to receive the divided shaping ring 3.

dose 4 to-shape the neckof the article, and

Vithin the mold ring 3 fits the sucking cap 6, the lower part of which is reduced in diameter to fit within the ring and cover the recess 4. For making wide-mouthed receptacles, the bottom of this cap may be recessed upwardly in concave form, as shown, or otherwlse, to lncrease the volume nwill be closed by the entering glass sucked in to form the blank, thus shutting off the suction when the blank cavity is filled. 9

indicates a cut-off device for severing the glass at the bottom of the mold when it is filled. After this blank mold has thus been filled with glass,- the cut-off is replaced by a movable plug 10, mounted on any suitable stem 11, this plug preferably entering the lower part of the mold, as shown, to support the glass. The sucking cap is then re-' moved, as. for example, by moving the blank mold to another station, and a plunger 12 is forced through a centering ring 13, which fits within the ring 5 and on the mold ring 3, as shown in Fig. 2. The upper portion of the glass is thus pressed into the recess of the mold ring and of the ring 13, to form the final shape of the neck and,

mouth of the article. .The blank mold is preferably shaped so that the volume of its upper part is relatively larger than its lower part, in order to provide the proper amount of glass for the pressing operation.

After the pressing operation, the ,parts of the blank 'orsucking mold are swung aside or raised, and the glass blank is'supp'orted by the plug 10 and the mold ring 3, into,wl1ich it has been pressed. The parts of the blow. mold indicated at 14', in Fig. 3, are then swung or moved into .place around the body of the blank, preferably at another station in the machine. The plug 10 is then permitted to drop out and the blow-head 15 .is brought into position on the mold ring.

The plug 10 on which the blank has been supported is arranged to prevent the blank from elongating and swinging when transferring the blank from the pressing station' to the blowing station. I have shown the blow mold as provided with a removable .95 otherwise separated, the plunger is I bottom plate 16, butthe details of this mold I l for the blank to prevent sagging and sway-- and arrangement of the molds, the sucking means,'etc., wlthoutdeparting from my in.-

- with an innershaping surface, and means may be widely varied Without departing from my invention. After the blank has been inclosed-by the blow mold, expanding pressure is supplied through the blow head to expand the body of the blank into the final article, as indicated at 17 in Fig. L. The parts of the mold and mold ring are then separated and thearticle removed in the usual way.-

The advantages of my invention result particularly from the sucking mold-which forms no partof the article in its final form. By thereafter pressing the neck and mouth portion in this mold into final form, I insure the filling of the neck and mouth-forming portions of the mold, which are often not completelyfilled, where the parts are shaped during the sucking operation. I thus obtain an accurate-shape and insure complete filling out of the neck and mouth of the article. a

The use of'the plug 10 serves to force the lower portion of the sucked blank back into the blank body before blowing, thus avoiding. the formation of a rough bottom; and the plug 10 also serves as a supporting seat ing of the blank when moving from vone station to the next. v l

The invention may be applied to the manufacture of narrow-necked bottles or'receptacles, as well as wide-mouthed bottles or receptacles, the blank mold, of course, being shaped according to the kind of article desired to be made.

Many'variations may be made in the form vention.

I claim: 7 ILA sucking mold having a 'mold ring for covering said inner shaping surface of the mold ring during sucking of glass into the mold, substantially as described.

2. A sucking mold having a mold ring provided with an inner shaping surface, in

. Copies ofthis patent may be obtained for five cents Washington, D. C.

-' my hand.

substantially as described. v A sucking mold having an open end, a

mold ring adapted to coact with said end,-

means for sucking the glass into the mold out of contact with the shaping mold ring, and means-for pressing the glass in the sucking mold into the shaping mold ring atone end thereof, substantially'as describedt,

'The combination With a sucking mold,

of a mold ring adapted to coacttherewith, means for sucking glass into the mold out of.

contact with the mold ring, means for press.

in the sucked glass into the mold ring, and a filow mold arranged'to'receive the mold ring and blank with its pressed end, substantially as described.

6. The combination with a sucking mold having open ends, of a. mold ring atone end having an inner shaping surface, means for covering the shaping surfaceofsaid-mold ring during sucking of glass mttii the mold,

and a support adapted'to support the other 'end of the glass article while hot, substantially as described. T

7, The combination with a, sucking mold having open ends, of a mold ring adapted to coact with the sucking mold, a plunger arrange-d to press the glass in lthe sucking. mold .lIltO. the mold 11mg, and a plugv an,

ranged to enter the other end of the jllfilt'lf:

and force the out endof'the glass up imp the body thereof, substantially as descril'zedf' In testimony whereotl have hereunto set ALEXANDEE LUMSDEN seania.

' Vlt nesses: 1 J. J. Fem,

E. Hymn each, by addressing th Commissioner of Pa 

